CN103568172B - A kind of stage curing device of the polyurethane with liquid as thermal source and curing - Google Patents
A kind of stage curing device of the polyurethane with liquid as thermal source and curing Download PDFInfo
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- CN103568172B CN103568172B CN201210279504.2A CN201210279504A CN103568172B CN 103568172 B CN103568172 B CN 103568172B CN 201210279504 A CN201210279504 A CN 201210279504A CN 103568172 B CN103568172 B CN 103568172B
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Abstract
The present invention discloses a kind of stage curing device of the polyurethane with liquid as thermal source and curing.It is characterized in that being made up of hydraulic control system, pouring system, compression system, carrying container and mould five part.Hydraulic control system includes passing in and out temperature sensing device, temperature control equipment and liquid turnover valve；Pouring system includes sub-sprue and female sprue；Compression system includes baffle plate, pressure sensing probe and pressue device.It is an advantage of the current invention that the hot water stream that uniformly continuous flows to ensure that the stage curing of polyurethane, it is ensured that the compactness of goods；Compression system efficiently reduces or avoids gas enclosure and bubble so that product surface is bright and clean smooth；Mould is the most detachable, can realize polylith sandwich plate and solidify polyurethane in the same time, substantially increase production efficiency；Whole set process automaticity is high simultaneously, saves human resources, improves labor efficiency.
Description
Technical field
The present invention relates to a kind of stage curing device and method of polyurethane, particularly relate to a kind of stage curing device of the polyurethane with liquid as thermal source and curing.
Background technology
Along with developing rapidly of heat preservation and insulation field, the variously-shaped vacuum insulation sandwich plates such as plate shaped, circular arc will substitute Conventional insulation as new high-tech product, be widely used in each field of thermal insulation such as naval vessel cold preservation, pipe insulation, building heat preservation, house insulation, household electrical appliances insulation with the heat-insulating property of its excellence.At present, insulating foam battenboard is full-fledged and is most widely used, and is used mostly organic plastics reaction injection, foaming, but has no research and the report of the moulding process for vacuum insulation sandwich plate.
Hengneike Co., Ltd discloses a kind of technique for producing polyurethane-moulded articles and device on the Chinese invention patent of Publication No. CN1651210A.It is sent in hybrid chamber form polyurethane reactive mixture in the way of metering by least one isocyanate component and at least one polyol component, is discharged in die cavity by runner.To apply in the polyurethane reactive mixture in die cavity pressure by pressure medium, what this pressure was high be enough to seal by reaction or thermal contraction or be mingled with the defect caused by air pocket.
Qingdao Raetoon Construction Engineering Co., Ltd. discloses a kind of production equipment of foam thermal insulation composite board and particular manufacturing craft on the Chinese invention patent of Publication No. 101214717.This mould is made up of base and main body frame, and main body frame is internally provided with the gripper shoe of stacked arrangement, and lower section is provided with the hydraulic cylinder being connected with gripper shoe, and a side bottom is connected with base rotation, and base is provided with the jacking system being connected with main body frame；Particular manufacturing craft includes die main body framework, and its frame is provided with major ingredient mouth, and inner side is provided with a bracer.Production equipment and particular manufacturing craft are with the use of the advantage having uniform in foaming, production efficiency is high.
Closing the RIM(reaction injection molding(RIM) in mould by being expelled to by reacting resin) in technique, must avoid or compensating defective (or " indenture ") by applying pressure, this defect is to be shunk caused by the gas enclosure with thermal contraction and produced when resin is flowed in die cavity or bubble by reaction.
Multiple method having been proposed in the past to solve this problem, some of which has been applied in practice.
Most common method is to add air or another kind of gas, referred to as gas-loaded in one or more basic components of response system.Once these components are mixed and are expelled to by reactant mixture to close in mould, dissolve or micro-scattered gas has just attempted to expand, this creates the terminal cavity pressure, this pressure can resist contraction, limits or reduce the scope of gas enclosure or the generation of larger bubble.This pressure declines over time.The shortcoming of this method is: (1) is merely able to produce limited pressure；(2) inject reactant mixture, cannot intentionally change dwell pressure；(3) gas-loaded cannot be used for transparent reacting resin, this is because minute bubbles produced by gas-loaded can cause moulding article unintelligible.
Therefore, invent a kind of it can be avoided that the urethane cures device and method of gas enclosure and bubble so that it is equably cladding vacuum heat-insulating plate and obtain bright and clean smooth vacuum insulation sandwich plate surface, technology and technique support will be provided for exploitation vacuum insulation sandwich plate market.
Summary of the invention
It is contemplated that make up the defect of existing insulation process technology, it is provided that a kind of stage curing device of the polyurethane with liquid as thermal source and curing.This solidification equipment and method are applicable to prepare vacuum insulation sandwich plate.
For solving the problems referred to above, the present invention provides a kind of stage curing device of the polyurethane with liquid as thermal source, it is characterised in that include hydraulic control system, pouring system, compression system, carrying container and mould.
Hydraulic control system of the present invention includes passing in and out temperature sensing device, temperature control equipment and liquid turnover valve.It is placed in the temperature sensing device of container bottom for detecting the real time temperature of liquid, controls device by regulating and controlling temperature and control the temperature of liquid so that the temperature in container is maintained between 65 DEG C-85 DEG C；The valve of turnover liquid becomes body diagonal distribution on carrying container, liquid flowing valve is in lower end, liquid valve door is in upper end, initial flow rate is set according to the specification of carrying container, first open liquid flowing valve, being allowed to slowly flow out until opening liquid valve door when liquid in container covers whole mould, regulating two valves and obtaining identical flow velocity, make the liquid adding in heat container be in the steady-state cycle flow regime of entirety.
Pouring system of the present invention includes sub-sprue and female sprue.Sub-sprue is for connecting mold and female sprue, it is characterised in that sub-sprue is connected with baffle plate and female sprue by two way valve threaded sleeve, and female sprue is terminated with compression system.
Compression system of the present invention includes baffle plate, pressure sensing probe and pressue device.Baffle plate is used for sealed mold, it is to avoid polyurethane overflows from mould upper end, it is characterised in that be uniformly distributed a number of venthole on baffle plate, and the screw thread that connects of its middle matches with the lower screw thread of sub-sprue；Pressure sensing probe is placed in mold bottom, it is possible to detects the real-time pressure in mould and is fed back；Pressue device is placed in the upper end of pouring system, pressure detecting instrument regulates, by the dynamic pressure value analyzing pressure sensing probe feedback, the pressure that pressue device should apply, and makes overflow in the venthole not from baffle plate of the polyurethane in mould and can be full of die cavity densely.
Carrying container of the present invention is three-dimensional uncovered water tank.Its specification customizes according to actual requirement, it is characterised in that be made up of materials such as high-strength high temperature resistant and that heat conductivity is low fiberglass or cement.
Mould of the present invention makes according to customer requirement, it is characterised in that its position strict seal immersed in liquid is non-leakage, and does not deforms in the liquid temperature of 65 DEG C-85 DEG C.
In order to solve the problems referred to above, present invention also offers a kind of stage curing method of the polyurethane with liquid as thermal source, it is characterised in that include the step of following order:
(1) a number of mould is put into add in heat container；
(2) temperature sensing device is placed in the bottom of container；
(3) pressure sensing probe is connected at die end；
(4) the side cut-in temperature at container controls device；
(5) with spray gun at mould inner surface even application layer 2-3 releasing agent；
(6) sandwich plate is put in a mold；
(7) two way valve threaded sleeve connecting mold and pressue device are used；
(8) polyurethane glue is injected by glue-pouring device；
(9) flow velocity of regulating water inlet valve door, until opening flowing water Valve when liquid fills whole device, regulation Inlet and outlet water speed, it is ensured that the water surface stable equilibrium in container；
(10) close two way valve threaded sleeve after 18-36 hour and take off pressue device；
(11) after mould cools down, the demoulding takes plate.
It is an advantage of the current invention that: the detachable property of (1) mould can realize polylith sandwich plate and solidify polyurethane in the same time, substantially increases production efficiency；(2) the hot water stream that uniformly continuous flows to ensure that the stage curing of polyurethane, it is achieved that bonding finer and close between sandwich plate and polyurethane glue, it is to avoid the formation of the defects such as shrinkage cavity and porosity；(3) on mould with compression system efficiently reduce or avoid gas enclosure and bubble so that product surface is bright and clean smooth；(4) this solidification equipment automaticity is high, saves human resources, improves labor efficiency.
Accompanying drawing explanation
Accompanying drawing is the structural representation of the present invention.
Fig. 1 is a whole set of solidification equipment schematic diagram, and wherein 10 is pressue device, and 11 is pressure detecting instrument, and 12 is carrying container, 13 is liquid flowing valve, and 14 is pressure sensing probe, and 15 is mould, and 16 is temperature sensor, 17 is liquid valve door, and 18 is sub-sprue, and 19 is temperature controller, and 20 is female sprue.
Fig. 2 is mould details schematic diagram, and wherein 21 is mould, and 22 is venthole, and 23 for connecting screw thread, and 24 is two way valve threaded sleeve, and 25 is baffle plate.
Detailed description of the invention
Below in conjunction with specific embodiment, it is further elucidated with the present invention, it should be understood that these embodiments are merely to illustrate the present invention rather than limit the scope of the present invention, after having read the present invention, those skilled in the art all fall within the application claims to the amendment of the various equivalent form of values of the present invention and are limited.
Embodiment
Embodiment 1
One secondary mould is put into be added in heat container; temperature sensing device is placed in the bottom of container; side cut-in temperature at container controls device; connect pressure sensing probe at die end simultaneously, with spray gun at mould inner surface even application layer 2-3 releasing agent, add heat container with water for Filled Dielectrics is whole; regulation water temperature is at 70 degrees Celsius; injecting polyurethane glue by pouring device, after solidifying 24 hours, the demoulding takes plate, can get one piece using polyurethane glue as the vacuum insulation sandwich plate of outer layer protection.
Embodiment 2
Six secondary moulds are put into be added in heat container; temperature sensing device is placed in the bottom of container; side cut-in temperature at container controls device; connect pressure sensing probe at die end simultaneously; with spray gun at mould inner surface even application layer 2-3 releasing agent; with oil for the whole flow velocity adding heat container and slowing down turnover fuel tap door of Filled Dielectrics; regulation water temperature is at 65 degrees Celsius; polyurethane glue is injected by glue-pouring device; after solidifying 28 hours, the demoulding takes plate, can get one piece using polyurethane glue as the vacuum insulation sandwich plate of outer layer protection.
Above are only two detailed description of the invention of the present invention, but the design concept of the present invention is not limited thereto, all changes utilizing this design that the present invention carries out unsubstantiality, the behavior invading the scope of protection of the invention all should be belonged to.In every case it is the content without departing from technical solution of the present invention, any type of simple modification, equivalent variations and remodeling above example made according to the technical spirit of the present invention, still fall within the protection domain of technical solution of the present invention.
Claims (2)
1. the stage curing device of the polyurethane with liquid as thermal source, it is characterised in that include being made up of carrying container, mould, hydraulic control system, pouring system and compression system five part: described carrying container is made up of the low fiberglass of high-strength high temperature-resistant and heat conductivity or cement material；The position strict seal that described mould immerses in liquid is non-leakage, and does not deforms in the liquid temperature of 65 DEG C-85 DEG C；Described hydraulic control system includes passing in and out liquid turnover valve, temperature sensing device and temperature control equipment, the valve of turnover liquid becomes body diagonal distribution on carrying container, liquid flowing valve is in lower end, liquid valve door is in upper end, set initial flow rate according to the specification of carrying container, and the temperature of liquid is 65 DEG C-85 DEG C；Described pouring system includes sub-sprue and female sprue, sub-sprue is connected with baffle plate and female sprue by two way valve threaded sleeve, it is terminated with compression system on female sprue, being uniformly distributed a number of venthole on baffle plate, baffle plate central authorities have connection screw thread to match with sub-sprue；Described compression system includes baffle plate, pressure sensing probe and pressue device, pressure sensing probe is placed in mold bottom, can detect the real-time pressure in mould and be fed back, pressure detecting instrument regulates, by the dynamic pressure value analyzing pressure sensing probe feedback, the pressure that pressue device should apply.
2. the stage curing method of the polyurethane with liquid as thermal source, it is characterised in that include following sequential steps:
(1) a number of mould is put into add in heat container；
(2) temperature sensing device is placed in the bottom of container；
(3) pressure sensing probe is connected at die end；
(4) the side cut-in temperature at container controls device；
(5) with spray gun at mould inner surface even application layer 2-3 releasing agent；
(6) sandwich plate is put in a mold；
(7) two way valve threaded sleeve connecting mold and pressue device are used；
(8) polyurethane glue is injected by glue-pouring device；
(9) flow velocity of regulating water inlet valve door, until opening flowing water Valve when liquid fills whole device, regulation Inlet and outlet water speed, it is ensured that the water surface stable equilibrium in container；
(10) close two way valve threaded sleeve after 18-36 hour and take off pressue device；
(11) after mould cools down, the demoulding takes plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210279504.2A CN103568172B (en) | 2012-08-08 | 2012-08-08 | A kind of stage curing device of the polyurethane with liquid as thermal source and curing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210279504.2A CN103568172B (en) | 2012-08-08 | 2012-08-08 | A kind of stage curing device of the polyurethane with liquid as thermal source and curing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103568172A CN103568172A (en) | 2014-02-12 |
| CN103568172B true CN103568172B (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210279504.2A Active CN103568172B (en) | 2012-08-08 | 2012-08-08 | A kind of stage curing device of the polyurethane with liquid as thermal source and curing |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2101515B (en) * | 1981-05-30 | 1986-02-05 | Ikeda Bussan Co | Producing polyurethane-foam moulding |
| JPS6140115A (en) * | 1984-04-05 | 1986-02-26 | Inoue Mtp Co Ltd | Adjustment of mold temperature |
| GB0702601D0 (en) * | 2007-02-09 | 2007-03-21 | Airbus Uk Ltd | Method and apparatus for curing a thermosetting material |
| CN202895546U (en) * | 2012-08-09 | 2013-04-24 | 苏州宏久航空防热材料科技有限公司 | Polyurethane segmented curing device with liquid as heat source |
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Address after: 215400 people's road, Jiangsu, Taicang Hua Xu apartment C412 Applicant after: Suzhou Hongjiu Aviation Heat Proof Materials Technology Co., Ltd. Address before: 215400 Suzhou, Jiangsu, Taicang Town, the people of the South Road, No. 162 Applicant before: Suzhou Hongjiu Aviation Heat Proof Materials Technology Co., Ltd. |
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